To quantify myopic progression (cycloplegic spherical equivalent refraction - cSER) following the cessation of use of specific spectacle lenses.
To quantify axial length progression following cessation of use of specific spectacle lenses.
Eligibility
Sex
ALL
Min age
9 Years
Max age
16 Years
Healthy volunteers
Accepted
Inclusion Criteria:
* Previously a successfully completed participant in the CYPRESS Extension study;
* Agree to wear the assigned spectacles constantly except for sleeping, swimming, or other activities in which spectacle wear would be dangerous or otherwise not possible (minimum of 10 hours per day);
* Willingness to participate in the trial for up to 12 months without contact lens wear;
* The subject's parent(s) or legal guardian(s) must read, understand, and sign the Statement of Informed Consent and receive a fully executed copy of the form.
Exclusion Criteria:
* Known allergy to proparacaine, tetracaine, or tropicamide.
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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